rosenberg



Nov. l, A1932. H. R'osENBER'G DAMPER APPARATUS Filed May 27, 1931 2Sheets-Shee.

Nov. l, 1932. H. RosENBl-:RG v 1,885,548

DAMPER APPARATUS Filed May 27, 1931 2 SheetS-Shee. 2

l y ||||l v' nu HIVA HEYMAN Rn SENBERE,

Patented Nov. 1, 1932 PATENT OFFICE;

HEYMAN ROSENBERG,

OF NEW YORK, N. Y.

DAMPER APPARATUS Application led May 27,

This invention relates to improvements in that type of damper apparatusin which a bearing plate. is attached to the flue or duct into which thedamper is to be inserted and is 5 proportioned to enable subsequentintroduction of the damper and to provide a bearing and actuator for thesupporting rod of the damper such, for example, as the type of damperapparatus illustrated in my Patent 10 No. 1,326,096, dated December 23,1919.

Among the objects in View is the pro-vision of an effective mounting fora damper at a minimum expense while enabling ready introduction andremoval of the damper and 35 also enabling effective operation of thedamper in use and the retention of the damper at various set positionsfrom time. to time.

A further object is Vsimplicity and inexpensiveness of constructionassuring ease of a@ assemblage and detachment of parts.

TWith these and further objects in view as will in part hereinafterbecome apparent and in part be stated, the invention comprises certainnovel constructions, combinations, and

25 arrangements of parts as subsequently specified and claimed.

In the accompanying drawings,-

Figure 1 is a side elevation of a damper attachment embodying thefeatures of the 3@ present invention.

Figure 2 is a vertical section therethrough taken on the plane indicatedby line 2-2 of Figure l, and looking in the direction indicated by thearrow. l 'w Figure 3 is a horizontal section taken on the planeindicated by line 3 3 of Figure l, and looking in the .directionindicated by the arrows.

Figuret is a vertical, transverse section through the bearing portionstaken approximately on the plane. indicated by line 4-4 of Figure 3. Y

Figure 5 is a view similar to Figure with e5 the duct omitted and aslightly modified embodiment illustrated.

Figure 6 is an edge view thereof.

Figure 7 is a longitudinal, vertical, central lsection therethrough, thedamper attaching 50 plate and stem being seen in elevation, and the1931. Serial No. 540,481.

section being taken on the plane indicated by line 7 7 of Figure 5. p

Figure 8 is a transverse, vertical section taken on the plane indicatedby line 8 8 of Figure 5. Y 1

Referring to the drawings by numerals, l indicates a duct or :flue orlike passageway for air, burnt products, or the like, which passagewayis controlled by an appropriate damper 2 having the usual longitudinal,outstanding stems or bearing rods 3 directly carried by an attachingplate 4 which is appropriately fixed to the damper 2 by bolts or othersecuring means 5. The flue or duct 'l is formed with the usual opening 6for 'the ready passage of the stem 3, the opening being sufficientlylarge to allow a certain amount of lateral play in the insertion of thedamper into place. While the corresponding opposing stem for the damper2 is not illustrated, .y it is well understood that the bearing oppositethe opening 6 is proportioned to provide a direct support for the stemand to allow only sufficient play to enable free rotation, so that thestem that is not illustrated is inserted irst, and then the damper 2 ismoved to position for thrusting the stem 3 through the opening 6.

All of the thus far described structure is of the common form long wellknown in the o art, and it has been customary also to provide anoperating lever for engagement with the stem through the opening 6 soconnected as to provide an appropriate bearing for the stem which willprevent excessive play of the stem in the opening 6.

In carrying out this idea in an inexpensive and eiiicient manneraccording to the present invention, a bearing plate 7 is provided and issometimes referred to as a dial plate beo cause of its contour, but, ofcourse, its shape is susceptible of a wide range of variation. Bearingplate 7 may be connected to the adjacent wall of duct l in any ofnumerous ways, but preferably by ears 8, 8 formed integral 95 with theplate and perforated to receive the rivets or other appropriateattaching means 9, 9, engaging the ears and the wall of duct l.Outstanding from the central portion of the plate 7, and preferablyformed integral mo therewith, is a tubular boss 10, the inner end of thebore or tube of the boss being preferably substantially of the samediameter as opening 6, and the said bore preferably tapering outward tothe extent available consistent with the required lateral play of stem 3in being inserted and removed. The exterior periphery of boss 10 ispreferably substantially cylindrical, and is provided with acircumferential, outwardly-opening groove 11. A segment of the baseofgroove 11 is preferably formed with an arcuate rack or series ofrounded teeth 12 for providing depressions therebetween to receive thetapered end of a locking screw 13. Detachably surrounding and findingbearing on the boss 10 is a cap 1d through one of the walls of which thescrew 13 extends, and the screw 13 is preferably provided with athumb-grip head to facilitate manual operation. rlhe screwV 13 isinserted through the wall of the cap 1li at that place enabling theinner end portion of the screw to extend into the groove 11 in position.to engage the depressions between the teeth 12. Preferably diametricallyopposite screw 13 (but vobviously susceptible of being relativelylocated) is a retaining screw 15 threaded through the wall of cap 1f1 inposition to e5:- tend into the groove 11 so as to hold the cap againstdisconnection from boss 10 when the screw 13 has been backed ofl' farenough to allow the cap to be rotated or adjusted az;- ially on andabout the boss 10 T he cap 141 is formed preferably centrally with anopening 15 proportions(L to snugly receive the stem 3, and as the stemis preferably squared or polysided at the place of engagement with the"opening 1G, the rotation or angular adjustment of cap 14 will occasioncorresponding angular adjustment of stem 3 and of the damper 2, the boss1() serving as a journal and the skirt of cap 11'- as the bearing forthe parts during such angular adjustment. To facilitate suchangulaiadjustment of cap 14, the cap preferably formed with an integralor appropriately attached handle 17 which may bedirectly manuallyoperated or may be engaged by a cable, not illustrated, connectedthrough the aperture or eye 18 to the handle to enable operation fromremote control.

lThe dial plate 7 is preferably provided with appropriate'graduationmarks 19,19, and with the words Open and Shut indicated at 20, 20, orother appropriate indicia to enable the operator to readily locate thedamper when and as required in the proper angular' relation to controlthe draft through flue 1. As a further aid, the skirt of cap lll may beprovided with an index pointer 21 located to cooperate with thegraduations 19.

The operation will be obvious from'tlieforegoing and may be brieflystated. To assemble the parts, the damper is first located as abovedescribed, and then the cap 14 is applied over the protruding end ofstem 3 and over the boss 10, the screws 13 and 15 either being entirelyabsent at the time of such application or backed olf vfar enough to befree of the boss 10. As soon as the cap has been applied, the bolt 15 isscrewed down to the seated position seen in Figure 3, and thus the cap14- is locked against accidental displacement. The cap is then adjustedto the desired angular adjustment, and the screw 13 thrust inward untilits inner end is seated in engagement with rack 12 so that the parts arelocked in the given position. Further adjustment thus becomes impossibleuntil the screw 13 is again backed off when a new position maybeassumed, and the screw 13 tightened to again lool: the parts in place.If remote control is employed, the screw 13 will, of course, be leftsuliiciently outward to be free of the racl and enable the swinging oflever 1T by the cable engaging eye 18, the securing of the cable beingdepended upon to hold the parts in a given adjusted position.

In Figures 5 to 8 is illustrated an embodiment substantially identicallythe same as that above described except for the inversion of the bearingparts whereby a part correspondin' to the boss is carried by the leverand is surrounded by an outstanding collar of the bearing late. In thisstructure, 22 indicates the bearing or dial plate having the outstandingcollar 23 into which is extended a boss 2d carried by an operating lever25, which boss is grooved at 26 to receive the retaining screw 27 andthe set screw 28, the groove 26 having a segmental rack 29 to receivethe tapered end of the set screw 28. The lever is preferably providedwith a pointer 30 disposed with respect to graduations 31 on plate 22.The lever 25 is formed with an aperture 32 for receiving the stem 3 toactuate the damper carried by said stem. The screws 27 and 28 are, ofcourse, carried by the collar 23.

The operation is the same as that described with respect to theembodiment of Figures 1 to 4 except that the boss member is sustained bythe lever and serves to provide bearing by engaging the inner face ofthe outstanding collar of the bearing plate or dial.

What is claimed is 1. In damper apparatus, the combination of a bearingplate having an outstanding tubular portion, the bearing plate beingadapted to be mounted fixed to the exterior of a damper-containing flue,a damper-stem engaging member telescoping with said tubular portion andmovable into and out of engagement with the tubular portionlongitudinally of the tubular portion while the tubular portion is thusmounted, means detachably interlocking the said stem engaging member andtubular portion against accidental detachment while leaving said partsfree for relative movement, and means for locking said parts againstrelative movement.

2. In damper apparatus, the combination of a bearing plate having anoutstanding tubular portion, a damper-stem engaging niember `telescopingwith said tubular portion, means detachably interlocking the said stemengaging member and tubular portion against accidental detachment while.leaving said parts free for relative movement, mea-ns for locking saidparts against relative movement, the interlocking means including agroove in one of the members and means adjustably extending from theother member into the groove.

3. In damper apparatus, the combination of a bearing plate having anoutstanding tubular portion, a damper-stem engaging member telescopingwith said tubular portion, means detachably interlocking the said stemengaging member and tubular portion against accidental detachment whileleaving said parts free for relative movement, means for locking saidparts against relative movement, the interlocking means including agroove in one of the members, a screw adjustably engaging the othermember and extending into the groove, and a set screw engaging themember engaged by the other screw and extending into the groove inposition for engaging a wall of the groove to lock the parts againstmovement.

t. The combination of a bearing plate, a hollow boss outstandingtherefrom and having a circumferential groove, a cap surrounding theboss and finding bearing thereon and having an opening adapted to snuglyreceive a stem of a damper, and a screw extending through the skirt ofthe cap into the groove of the boss for detachably locking the partstogether.

5. The combination of a bearing plate, a hollow boss outstandingtherefrom and having a circumferential groove, a cap surrounding theboss and finding bearing thereon and having an opening adapted to snuglyreceive a stem of a damper, a screw extending through the skirt of thecap into the groove of the boss for detachably locking the partstogether, and a screw also extending through the skirt of the cap andproportioned to be threaded into the groove to a position engaging awall of the groove to lock the parts against relative movement.

6. The combination as claimed in claim 5 wherein that portion of thewall of the groove adapted to be engaged is formed into the shape of arack to provide depressions to be engaged by the locking screw.

7. The combination, with a bearing plate adapted to be mounted iixed tothe exterior of a damper-containing flue, of a collar outstanding fromthe plate and being open from its outer end inward, a handle having aboss extending into the collar from outward thereof and iinding bearingtherein, the boss being withdrawa-ble outwardly freely from the collar,the said boss being formed with an opening proportioned to receive thestem of a damper, and means for detachably retaining the boss againstescape from the collar.

8. The combination, with a bearing plate adapted to be mounted fixed tothe exterior of a damper-containing flue, of a collar outstanding fromthe plate and being open from its outer end inward, a handle having aboss extending into the collar from outward thereof and finding bearingtherein, the boss being withdrawable outwardly freely from the collar,the said boss being formed with an opening proportioned to receive thestem of a damper, means for detachably retaining the boss against escapefrom the collar, and a locking screw threaded through the collar intoposition for having locking engagement with the boss for retaining thelatter against relative movement with respect to the collar.

9. The combination, with a bearing plate adapted to be mounted fixed tothe exterior of a damper-containing flue, of a collar outstanding fromthe plate and being open from its outer end inward, a handle having aboss extending into the collar from outward thereof and finding bearingtherein, the boss being withdrawable outwardly freely from the collar,the said boss being formed with an opening proportioned to receive thestem of a damper, the boss being formed with a peripheral groove, and ascrew threaded through the collar into the groove for locking the bossagainst disengagement from the collar.

l0. The combination, with a bearing plate, of a collar outstandingtherefrom, a handle having a boss extending into the collar and findingbearing therein, the said. boss being formed with an openingproportioned to receivethe stem of a damper, the boss being formed witha peripheral groove, and a screw threaded through the collar into thegroove for locking the boss against disengagement from the collar, thewalls of the groove throughout a segment thereof being shaped to providea segmental rack, and a. set screw threaded through the collar inposition for being threaded to a location extending between the teeth ofthe rack.

In testimony whereof I aiiix my signature.

HEYMAN ROSENBERG.

